A grounding line的用法和样例：
- Ground the water heater by connecting a grounding wire from the electrical service ground terminal to the green grounding screw in the junction box of the water heater.
- Under single-phase grounding incid ent of distribution network,the device can exactly select the grounding line and completely compensate single-phase grounding capacitive current.
- Has ship been involved in a grounding incident during the past 12 months?
- The fox went to ground under a rocky escarpment.